Vehicle brake and coaster.



WV. ARQBINSON. VEHEGLEBIRAKE AND UOSTER. PPL'UATION fum) PEB, ze, 1962.

Pnte Aug so, 1910.

c/ymw/ one i idisfilihll WELLXAM ROBINSON, OF BROOKLYN, NEW YQRK,ASSIGNOR TO MIAMI CYCLE d: MANU- FACTURING COMPANY, 0F MIDDLETOWN, OHIO.

VEHICLE BRAKE AND COASTER.

Application filed February 28, 1902. Serial No. 9l,048.

To all whom it may concern:

Be it known that I, Nini-,IAM ROBINSON, a citizen of the United States,and e. resident of Brooklyn, in the county of Kings and State of NewYork, have invented a new and Improved Vehicle Brake andCoester, ot'which the following is a. specification.

The nature of my invention will be clearly understood from thedescription which follows, reference being had to the accompanyingdrawing, which forms a part of this specification, in Which Figure l isa longitudinal sectional view of a bicycle hub on the line 31, y, Figs.6 and 7, illustrating my invention; Fig. 2 is a perspective view oi' thedriving sleeve with the driver attached thereto; Fig. 3 is alongitudinal section showing an interior view of the 'clutch sleeve, andFig. Li is an end view' of the sanie looking from the left. Fig. 5

is a perspective view of a slotted tubularspring; Fig. G is an insideplan view of the brake mechanism, through the line m, Fig. l, and Fig.is a. similar View of saine showing an alternative connection betweenthe brake shoe and the brake lever. Fig. 8 is an inner end view of thebrake actuator, looking toward the left, and Fig. 9 is an innei` endview of the driving clutch inember which is secured to the enter hubsleeve, looking toward the right, While Fig. 10

` shows a 'detached detail giving a side view of the projectionsconstituting the outer end of the brake actuator.

A represents a bicycle hub in which a re resents the supporting axlesecured vto the 'traine B of a bicycle, in the usual manner. `Thedriving or gear sleeve C, to which the driving sprocket or gear D issecured, proects within the outer or hub sleeve E and `1s snpiiortedrotatably, at one end by the supporting shaft andat its opposite end bythe brake actuator, and rotates on the ball hearings b, o, as shown. Tie driving sleeve C is provided on its exterior with quick acting screwthreads or spirals c which engage corresponding spiral grooves c on theinterior o the clutch sleeve F', located between said driving sleeve Cand the outer huh E.

G is a brake actuator 'mounted on the shaft a and arranged to rotateslightly thereon. Said brake actuator has its outer reduced end d' cutaway at oppositesides of the supporting shaft shown at a", Figs. G,

Speecaton of Letters Patent.

Patenten nog. so, raro.

i and 10, thus leaving the projections e, e at opposite sides of saidsupporting shaft. rlhe non-rotatable brake plate H, provided with theextension f, is supported by the shaft a v at its center, while the saidextension j', se-

cured to the lower fork side B oi' the bicycle, by a strap or band, inthe usual inanner, thus renders said plate H non-rotatable andstationary with reference to the revolving hub. The brake shoes andtheir iininediate attachments are secured to said non-rotatable plate,movably hut non-rota.- tably. lThe brake shoes L are provided with linksz' pivoted thereto at one end, as shown at z", `while the opposite endsof said links are pivot-ally connected to the brake plate H, as shown at'l he opposite ends of the shoes fz., as shown in Fig. 6, are providedwith links Z having one end pivotally con neeted vto said shoes, asshown at c, and the opposite ends pivotally connected to the outer endsof the brake levers m as shown at Z. The levers m are pivoted to theplate H, as shown atm', at opposite sides ofthe a 'le a, 'while theprojections e, c from the outer end of the .brake actuator G project outbetween the levers m, in operative relation thereto.

The operation is as follows: lVhen the driving sleeve C is rotatedforward by the driver D, in driving the wheel, the spirals 0 of saiddriving sleeve draw the clutch sleeve F to the right until the beveledteeth n thereof engage the beveled teeth n of the clutch nieniber I,thus the driving sleefve (l is securely locked, without possibility ofslipping, to the outer huh lil, through said clpteh sleeve F, and thewheel and the inachine are driven forward.

Then it is desired to coast the pedals are held stationary and therevolving outer huh lll instantly drives the clutch sleeve F along thespirals c of the driving sleeve C, to the position shown in F ig. l.Thus the outer hub lil instantly clears itself from all conection withthe'fclutch sleeve F, without friction or sticking or jerking, andcoasts freely on the ball bearings 77, 79.

To appl;T the brake the crank shattis rotated backward, thus rotatingthe driving sleeve C backward. This, through the reversed action oi thespiral. c, moves the clutch sleeve F to the left until the teeth of thebevel gear g thereof engage the 'hevlos fl e

;jertione e in the direction of the 3 'lnlieee proyeetions e mr endstiie levers; m, thus levers on. the. pixels and ir the insioe of rnseein-eel to, or part nl", the rotenng outer hun lil Seid. brake "mes,as ellow: .e

the ee, wheel is kept ol und r antly slowed l lily etoppol lleelred., 'e,preeenre np; cl to the brake, any possible ing or raking p rwsure isremoved the f release the brake and Carry tlife f ,smoes clear of theinner Surface of the drinn, thus obviatine' the possibility .En with thefree clriving lnnnxnfe, the removal of vthe Clutch @i y" oit the alize o'ne vpoeiton Shewn in le' enly necessary to enough to withn e brakeactuator l' refeii'ably initiieren, nel Xml einyeel i12/ee radins asthat el the brake clr n "isp the peculiar e no3 brake f el the ellebrake el mor periphery i t We, L 't the eeen shoe with Ille inner peybrake drum, tlnils more eilielent and reliable te# se heretoforeproposed. lo"'- e lureke shoes are appielil by A forward somewlmt, inthe lotution of the coastleg Wheel, .t rotation of the Wheel tends; tolying the brake more firmly wli'en Y s'ioee zare brought inte Contactwith the nier periphery of the brake drum, the topyfle enlnn'nng thepressure.

'l ie eenstruetion Sliown in 7 is eely the sinne. that shown in lillg.6, ebb e uit instead the link sluwe et the of the Shoes it the onte endeof are piyojally connected directly :enla et' the 'brake shoes afljeeentShown ats. ln this ense the is i,rovnlefl with :t Slight slot .9 to:llow outward rnoven'ierlt relatively to the This construction is;regarded as an native :Linfl equivalenteenstruetion to siemi et in Fig.(3, :1s each provides an entivenl, forward anal zmtoi'nzitieallyadjnstable movement oli the brake shoe ijn C Yder 'that there may be noposeibilty el et between Vthe driving sleeve U on me outer surface @itthe clutch sleeve l?,

Said slotted Sleeve L slightly eoimpressedv between Ythe shoulder u onthe interior of the hub sleeve E .and the bells of the ball bearings p".This offers sutlieient resistance to prevent the clutch sleeve F from.being turned by the turning of the driving sleeve C before Seial clutchsleeve has engaged one or the other set teeth n or g of the dri'w ing orbralling eluell members.

ln the @et of driving, the driving eleeye C, the clot-oli sleeve la, theslotted ring L enel lle ont-er hub sleeve l@ er; all locked. togetherand. rotetecl on the bearings jp, g2 te one rotating devlce, wlile incoasting: all ieee elemente remain stationary the outer hub nl whichcoasts on 'the ringe lt Willbe observed that the nell beernnfe '19 arearranged between the the brake actuator G, e

'metter ef e l enence el? arrangement, While tl-1e bearings et theopposite end et limb, are @fren "lie wlter lil in' 'l the driving sleeveC. `,ln 'the inge et tlye inner enel. o? t. g riving el' i between l u,ere shown am arrange Seid sleeve C enc". tlie brake eetiiator G, matterof conve ience also, es in this ease the movable brake actuator G le,"or the purpose of this bearing, equivalent to a` bell en@ il eil orotherwise secured to the :wle a md co1' esponding to the cone shapedinner end. of the driving sleeve C, as shown.

The cellar fz; is lui-ought against :L shoulder 1: on the left hand endof the zulle a and. this collar rv forms a solid bearing and stopagainst which the ixeel glute ll is presse( while et the opposite end ofseid axle a, the :one w lornie u. Stop fer the jaw B of the bicycleframe. 'lhus the external pressure applied in securing the hub A inposition between the jaws ll, B, of the bicycle is prevented frominterferingr in any manner with the free movement of any of the .movingeleniente of seid hub A. The studs fr, secured to the lined plate lil,form en anchorage for one end of the brake release Springe r, While thestuds or pine #falso secured to said fixed plate H, regulate the tensionof eid springe '1 upon or against the brake shoes le lt will be noticedthat the brake Shoes /t .are provided, preferably near tire endsopocaso-i ders t which come against the studs r when the b ake isreleased. Thus the bralnv shoes, when released, are pcrinitted to hewithdrawn only a slight predetermined distance from the inner peripheryof the brake drum K. Furthermore, this arrangement. prevents thepossibility of the shoes swinging backward on their toggle links farenough to push the lever ends of 'said released shoes against the brakedrum 5 Thus possibility of accidental contact between the released brakeshoes and the brake drum is provided against. inspection will show thatthe brake levers m., in the released position of the brake shoes shownin Figs. (3 and' 7, rest against the axle or shaft a. This is aconvenient means of limiting' the recession of said levers ym. But itwill be understood that. any other stop or means ot' limiting' anddefining the released position of the shoes, whether applied directly tothe levers m., to the shoes, or to any other suitable part o'f theoperative brake mechanism, -ill. be equally effective; for instance.,the pin n limiting the recession of the connecting link Z or of the endof the shoe iz., will accomplish the same result.

A decided advantage of the bevel gear construction of the clutch membersis that while they interlock instantly and lirmly, and withoutpossibility Aof slipping', although the` teeth are beveled on bothsides, yet they release much niorereadily than is possible with anyfriction clutch connection, and, it is believed, more readily andpositively than any other form of clutch used for similar purposes, Theteeth of these beveled clutch gears are brought down to a sharp orrounded edge externally, (see Fig. 3) so that it is impossible for theclutching members to foul each other, or to fail to interlock theinstant they are brought together. Furthermore, the teeth of theseintermeshine beveled clutch gears are inclined, one sct at an acuteangle, and the teeth of its correspondingl gear at an obtuse angle, tothe axis of the hub, that is, of the gears, whereby said teeth have agreater bearingV surface, and consequently greater strength anddurability` than when said teeth are constructed and arranged at rightyangles to their axes. lfith this construction of clutch the wheel willAnot only coast, but it may be rolled backward like any ordinary wheel.

l-laviiig;l thus described my invention, what i claim as new and desireto secure by Letters Pffitent. is:

l. A brake mechanism for coaster brakes and the like, said mechanismcoinprisi a non-rotatable fixture, a plurality of nonyieiding' brakeshoes, each havingA one end adju bly connected to said fixture, a brakeactuating device, flexible connections inter- -posed between the'opposite ends of said shoes and said brake actuating' device to imen einpart to said shoes an outward movement, and means for coupling saidbrake actuating device with the motive power therefor.

2. A brake mechanism for coaster brakes' and the like, comprising awheel hub, a plurality of brake shoes, a portion of the hub overlappingsaid shoes, a stationary brake member, a brake actuating device,flexible connections interposed between one end ein position by saidstationary member and having a flexible connection interposed between*rsaid stationary member and'one end of said shoe, means between saidbrake actuator and the opposite end of said shoe for forcing said shoebodily into braking contact with said braking surface of the hub onthebackward movement of said brake actuator, and means for coupling saidbrake actuating device with the motive power therefor.

et. in a hub brake, a coasting Wheel hub provided on its inner peripherywith a brakingr surface, a stationary brake member, a plurality ofmovable braking-elements or shoes secured in non-rotatable position bysaid stationary brake member, a brake aotuator, means for connecting-one end of each of said shoesitlexibly to said stationary brake member,means interposed between said brake actuator and the opposite ends ofsaid slices for forcing saidA` slices bodily into braking contact withsaid braking surface of the hub on reversing the driving' pressure, andmeans for coupling said `brake actuator with the motive power therefor.

5. ln a brake mechanism for cycles, the combination with a wheel hubhaving an inner braking surface, of a brake actuator, a stationaryanchoring plate, a plurality of brake shoes secured in non-rotatableposition by said anchoring plate, each shoe being providedat oneend witha toggle link connecting it movably to said anchoring plate, meansbetween said brake actuator' and the opposite ends of said shoes forforcing said shoes bodily into braking contact with said ng surface ofthe hub, on the backward movement., ofv said actuator, and means forconnecting said brake actuator with the motive power therefor.

t3. ln a cycle wheel hub, the combination of a supporting` shaft, adriving sleeve rotatable hersen, means for driving said sleeve,

